CN107379516A - A kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing - Google Patents

A kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing Download PDF

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CN107379516A
CN107379516A CN201710840447.3A CN201710840447A CN107379516A CN 107379516 A CN107379516 A CN 107379516A CN 201710840447 A CN201710840447 A CN 201710840447A CN 107379516 A CN107379516 A CN 107379516A
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silica gel
pattern
poroelasticity
layer
foam
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CN107379516B (en
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田晓青
吴雨
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Hefei University of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Abstract

The present invention relates to a kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing.More than eight layers of foamed material is made using fluid 3D printer.In foamed material per layer material by different strips pattern it is evenly distributed form, the pattern is divided into five kinds：Type is kicked in linear pattern, sinusoidal waveform, 8 fonts, convoluted, side；Working process parameter is silica gel viscosity R, silica gel sprays flow velocity Q, jet diameters D, sprinkler height H and shower nozzle translational speed U0；In the technological parameter, it is Conventional process parameters that silica gel viscosity R, silica gel, which spray flow velocity Q and jet diameters D, and sprinkler height H is 6 51mm, shower nozzle translational speed U0For 2 14mm/s；Pattern parameter is amplitude W, the Cycle Length P of figure and the loop bandwidth T of figure of figure；The porosity of manufactured goods is 30 50%, and modulus of elasticity is more than 5.0KPa.3D printing of the present invention makes the 70min of average out to 50 the time required to silica gel poroelasticity foam, and production efficiency is greatly improved.

Description

A kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing
Technical field
The invention belongs to 3D printing to prepare product technical field, and in particular to silica gel 3D printing prepares poroelasticity foam Method.
Background technology
Existing silica gel 3D printing technique is mainly used to make relatively compact silica gel product, and its porosity and accumulation are close Degree can not be adjusted according to the functional requirement of product, and the silica gel product density that existing method processes is higher, Mei Faman Foot is applied to the silica gel product of medical domain or the functional requirement of silicone elastomer foamed product.
Existing silica gel 3D printing technique and silicone elastomer foam-manufacturing process still have other deficiencies：（1）Pass through hair The silica gel product major part bulk density suitable for medical domain that bubble method is produced is all very big, and this manufacturing process is not only Time and materials are expended, can also increase unnecessary weight when being installed on human body；（2）It is used to catalyst made of current silica gel manufacture And the product of catalyst carrier does not have good specific surface area, therefore produce inefficient；（3）The system of common silica gel product Make that technological flexibility is relatively small, cost, Shortcomings will be accordingly increased when manufacturing the silica gel product of different size.
The content of the invention
Porosity and the controllable silica gel product of bulk density are prepared in order to realize, satisfaction is applied to medical domain or catalyst Carrier etc., the present invention provide a kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing.
A kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing, using fluid 3D printer, realize The making of more than eight layers of elastic foam material；
Formed in described more than eight layers of elastic foam material per layer material by pattern of different shapes is evenly distributed, the pattern It is divided into five kinds：Type is kicked in linear pattern, sinusoidal waveform, 8 fonts, convoluted, side；Per layer material length be a, width b, adjacent two The spacing arranged between pattern is d；
The technological parameter for realizing the operation of five kinds of patterns is silica gel viscosity R, silica gel sprays flow velocity Q, jet diameters D, sprinkler height H and Shower nozzle translational speed U0；In the technological parameter, silica gel viscosity R, silica gel spray flow velocity Q and jet diameters D joins for common process Number, sprinkler height H is 6-51mm, shower nozzle translational speed U0For 2-14mm/s；Pattern parameter be figure amplitude W be 0-14mm, The Cycle Length P of figure is 0-45mm, the loop bandwidth T of figure is 0-7mm；
Manufactured poroelasticity foam, porosity 30-50%, modulus of elasticity are more than 5.0KPa.
The technical scheme further limited is as follows：
Spacing d between the adjacent two rows pattern is 3-5mm.
The cross-shaped state of arrangement of adjacent two layers pattern.
When making linear material layer, the sprinkler height H in technological parameter is 6-51mm, shower nozzle translational speed U0For 12-14mm/s, amplitude W is 0-0.2mm in pattern parameter, Cycle Length P is 0, loop bandwidth T is 0.
When making the material layer of sinusoidal waveform, the sprinkler height H in technological parameter is 6-24mm, shower nozzle translational speed U0For 7-12mm/s, amplitude W is 10-11mm in pattern parameter, Cycle Length P is 22-24mm, loop bandwidth T is 0.
When making the material layer of " 8 " font, sprinkler height H is 6-51mm, shower nozzle translational speed U in technological parameter0For 3- 9mm/s, amplitude W is 13-15mm in pattern parameter, Cycle Length P is 43-45mm, loop bandwidth T is 4-6mm.
When making convoluted material layer, sprinkler height H is 6-51mm, shower nozzle translational speed U in technological parameter0For 2- 3mm/s, amplitude W is 2-5mm in pattern parameter, Cycle Length P is 1-4mm, loop bandwidth T is 2-4mm.
When the material layer of type is kicked in making side, sprinkler height H is 24-51mm, shower nozzle translational speed U in technological parameter0For 7- 13mm/s, amplitude W is 9-11mm in pattern parameter, Cycle Length P is 42-44mm, loop bandwidth T is 5-7mm.
Beneficial effects of the present invention embody in the following areas：
（1）The silica gel poroelasticity foam that the present invention is made by 3D printing, can be according to different functional requirements, adjustment control Parameter, porosity reach 5%-50%, are manufactured available for catalyst and as catalyst carrier, and can obtain good effect.（2） The elastic foam material processed by the present invention has less bulk density, may be advantageously employed in artificial limb and correction The filling of device；
（3）Due to can by changing and adjusting the porosity in foam to manufacture the foam with Variable Area modulus of elasticity, This just makes this foam can be used as functional innersole, and industrial bradyseism pad etc., and channel is applied with numerous；
（4）The average time of existing production silica gel foamed material is 2-4h, and 3D printing of the present invention makes silica gel poroelasticity bubble Average out to 50-70min the time required to foam, is greatly improved production efficiency.
Brief description of the drawings
Fig. 1 is mode of operation figure of the present invention.
Fig. 2 is the relative velocity U of jet diameters D, shower nozzle volume flow Q, fluid falling head H, shower nozzle and interplanar0Shape State schematic diagram.
The fluid falling head H and relative velocity U of shower nozzle and interplanar when Fig. 3 is five kinds of pattern experimental implementations0State Collection of illustrative plates.
Fig. 4 is five kinds of types of patterns and pattern parameter（Scale is in units of millimeter, W- amplitudes, P- Cycle Lengths, T- loops Width）Schematic diagram.
Fig. 5 is the printing schematic diagram line by line of convoluted pattern.
Fig. 6 is the expanded schematic diagram of poroelasticity foam.
Fig. 7 is poroelasticity foam figure in kind.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is further described by embodiment.
Referring to Fig. 1, poroelasticity foam is made using 3D printer.3D printer mainly bag screw pump controller, screw rod Pump, air compressor, nozzle, X-axis, Y-axis, Z axis.Referring to Fig. 2, shifting is expressed into from the extruder head of certain altitude by liquid silica gel Printing forms pattern on moving platform, and referring to Fig. 3 and Fig. 4, pattern is divided into five kinds：Linear pattern, sinusoidal waveform, 8 fonts, it is convoluted, Kick type in side.Referring to Fig. 5, the length per layer material is a, the spacing d between width b, adjacent two rows pattern is 3-5mm.Realize The technological parameter of five kinds of pattern operations is silica gel viscosity R, silica gel sprays flow velocity Q, jet diameters D, sprinkler height H and shower nozzle and moved Speed U0；In the technological parameter, it is Conventional process parameters that silica gel viscosity R, silica gel, which spray flow velocity Q and jet diameters D, and shower nozzle is high Degree H is 6-51mm, shower nozzle translational speed U0For 2-14mm/s；Pattern parameter is the amplitude W of figure, the Cycle Length P of figure and The loop bandwidth T of figure.
Embodiment 1
Processed foamed material is 25 layers of poroelasticity foam, a height of 1.2mm of average layer.
In technological parameter, silica gel viscosity R is 62.5Pas, silica gel ejection flow velocity Q is 0.12ml/min, jet diameters D is 0.41mm, sprinkler height H are 12mm, shower nozzle translational speed（Print speed）U0For 2mm/s.
Every layer of pattern by strip convoluted pattern it is evenly distributed form, the arrangement of adjacent two layers pattern is cross-shaped State.The amplitude W of convoluted pattern is 2.86mm, Cycle Length P is 1.4mm, loop bandwidth T is 2.5.
Referring to Fig. 5, the length a per layer material is 70mm, width b is that spacing d between 70mm, adjacent two rows pattern is 3mm。
It is shown in Figure 6, according to processing route, from the off, produce winding line 1 in the X direction using winding pattern, For winding line at the end of the 1st row, workbench moves d=3mm in the Y direction（The distance between two adjacent lines）, and start to print Winding line 2, winding line printing are repeated until terminating point, and after first layer machines, workbench moves a certain distance along Z-direction （The height of winding layer）, and ensure nozzle to manufactured silica gel layer height be 12mm, and start in X direction（Perpendicular to Direction in layer 1）Layer 2 is printed line by line, in layer 3, line direction change into it is identical with layer 1, by that analogy, altogether printing 25 layers.
Referring to Fig. 7, the density of resulting poroelasticity foam is 0.327 g/cm3, by compression verification, obtain its elasticity Modulus is 8.73KPa.
Embodiment 2
Processed foamed material is 25 layers of poroelasticity foam, a height of 0.75mm of average layer.
In technological parameter, silica gel viscosity R is 62.5Pas, silica gel ejection flow velocity Q is 0.12ml/min, jet diameters D is 0.41mm, sprinkler height H are 6mm, shower nozzle translational speed（Print speed）U0For 3mm/s.
Every layer of pattern by strip convoluted pattern it is evenly distributed form, the arrangement of adjacent two layers pattern is cross-shaped State.The amplitude W of convoluted pattern is 3.5mm, Cycle Length P is 2.7mm, loop bandwidth T is 2.7mm.
Referring to Fig. 5, the length a per layer material is 70mm, width b is that spacing d between 70mm, adjacent two rows pattern is 3.5mm。
It is shown in Figure 6, according to processing route, from the off, produce winding line 1 in the X direction using winding pattern, For winding line at the end of the 1st row, workbench moves d=3.5mm in the Y direction（The distance between two adjacent lines）, and start to beat Printed volume coiling 2, winding line printing are repeated until terminating point, and after first layer machines, workbench moves a spacing along Z-direction From（The height of winding layer）, and ensure nozzle to manufactured silica gel layer height be 6mm, and start in X direction（Perpendicular to Direction in layer 1）Layer 2 is printed line by line, in layer 3, line direction change into it is identical with layer 1, by that analogy, altogether printing 25 layers.The density of resulting poroelasticity foam is 0.262 g/cm3, by compression verification, obtaining its modulus of elasticity is 6.46KPa。
Embodiment 3
Processed foamed material is 25 layers of poroelasticity foam, a height of 0.7mm of average layer.
In technological parameter, silica gel viscosity R is 62.5Pas, silica gel ejection flow velocity Q is 0.12ml/min, jet diameters D is 0.41mm, sprinkler height H are 12mm, shower nozzle translational speed（Print speed）U0For 3mm/s.
Every layer of pattern by strip convoluted pattern it is evenly distributed form, the arrangement of adjacent two layers pattern is cross-shaped State.The amplitude W of convoluted pattern is 5mm, Cycle Length P is 3.84mm, loop bandwidth T is 3.5mm.
Referring to Fig. 5, the length a per layer material is 70mm, width b is that spacing d between 70mm, adjacent two rows pattern is 5mm。
It is shown in Figure 6, according to processing route, from the off, produce winding line 1 in the X direction using winding pattern, For winding line at the end of the 1st row, workbench moves d=5mm in the Y direction（The distance between two adjacent lines）, and start to print Winding line 2, winding line printing are repeated until terminating point, and after first layer machines, workbench moves a certain distance along Z-direction （The height of winding layer）, and ensure nozzle to manufactured silica gel layer height be 12mm, and start in X direction（Perpendicular to Direction in layer 1）Layer 2 is printed line by line, in layer 3, line direction change into it is identical with layer 1, by that analogy, altogether printing 25 layers.The density of resulting poroelasticity foam is 0.248 g/cm3, by compression verification, obtaining its modulus of elasticity is 5.94KPa。
Embodiment 4
Processed foamed material is 25 layers of poroelasticity foam, a height of 1.9mm of average layer.
In technological parameter, silica gel viscosity R is 62.5Pas, silica gel ejection flow velocity Q is 1.19ml/min, jet diameters D is 1.1mm, sprinkler height H are 6mm, shower nozzle translational speed（Print speed）U0For 3mm/s.
Every layer of pattern by strip convoluted pattern it is evenly distributed form, the arrangement of adjacent two layers pattern is cross-shaped State.The amplitude W of convoluted pattern is 3.8mm, Cycle Length P is 2.6mm, loop bandwidth T is 3mm.
Referring to Fig. 5, the length a per layer material is 70mm, width b is that spacing d between 70mm, adjacent two rows pattern is 5mm。
It is shown in Figure 6, according to processing route, from the off, produce winding line 1 in the X direction using winding pattern, For winding line at the end of the 1st row, workbench moves d=5mm in the Y direction（The distance between two adjacent lines）, and start to print Winding line 2, winding line printing are repeated until terminating point, and after first layer machines, workbench moves a certain distance along Z-direction （The height of winding layer）, and ensure nozzle to manufactured silica gel layer height be 6mm, and start in X direction（Perpendicular to layer Direction in 1）Layer 2 is printed line by line, in layer 3, line direction is changed into identical with layer 1, by that analogy, prints 25 altogether Layer.The density of resulting poroelasticity foam is 0.415 g/cm3, by compression verification, obtaining its modulus of elasticity is 10.20KPa。
Embodiment 5
Processed foamed material is 25 layers of poroelasticity foam, a height of 1.9mm of average layer.
In technological parameter, silica gel viscosity R is 62.5Pas, silica gel ejection flow velocity Q is 1.19ml/min, jet diameters D is 1.1mm, sprinkler height H are 18mm, shower nozzle translational speed（Print speed）U0For 10mm/s.
Every layer of pattern by strip sinusoidal waveform pattern it is evenly distributed form, the arrangement of adjacent two layers pattern is cross-shaped State.The amplitude W of convoluted pattern is 10mm, Cycle Length P is 22mm, loop bandwidth T is 0.
Referring to Fig. 5, the length a per layer material is 70mm, width b is that spacing d between 70mm, adjacent two rows pattern is 20mm。
It is shown in Figure 6, according to processing route, from the off, produce winding line 1 in the X direction using winding pattern, For winding line at the end of the 1st row, workbench moves d=20mm in the Y direction（The distance between two adjacent lines）, and start to beat Printed volume coiling 2, winding line printing are repeated until terminating point, and after first layer machines, workbench moves a spacing along Z-direction From（The height of winding layer）, and ensure nozzle to manufactured silica gel layer height be 18mm, and start in X direction（Vertically Direction in layer 1）Layer 2 is printed line by line, in layer 3, line direction is changed into identical with layer 1, by that analogy, beats altogether 25 layers of print.
The density of resulting poroelasticity foam is 0.115 g/cm3, by compression verification, obtaining its modulus of elasticity is 3.63KPa。
Embodiment 6
Processed foamed material is 25 layers of poroelasticity foam, a height of 1.9mm of average layer.
In technological parameter, silica gel viscosity R is 62.5Pas, silica gel ejection flow velocity Q is 1.19ml/min, jet diameters D is 1.1mm, sprinkler height H are 12mm, shower nozzle translational speed（Print speed）U0For 5mm/s.
Every layer of pattern by strip " 8 " word pattern it is evenly distributed form, the arrangement of adjacent two layers pattern is cross-shaped State.The amplitude W of convoluted pattern is 14mm, Cycle Length P is 43mm, loop bandwidth T is 5.
Referring to Fig. 5, the length a per layer material is 70mm, width b is that spacing d between 70mm, adjacent two rows pattern is 10mm。
It is shown in Figure 6, according to processing route, from the off, produce winding line 1 in the X direction using winding pattern, For winding line at the end of the 1st row, workbench moves d=10mm in the Y direction（The distance between two adjacent lines）, and start to beat Printed volume coiling 2, winding line printing are repeated until terminating point, and after first layer machines, workbench moves a spacing along Z-direction From（The height of winding layer）, and ensure nozzle to manufactured silica gel layer height be 12mm, and start in X direction（Vertically Direction in layer 1）Layer 2 is printed line by line, in layer 3, line direction is changed into identical with layer 1, by that analogy, beats altogether 25 layers of print.
The density of resulting poroelasticity foam is 0.107 g/cm3, by compression verification, obtaining its modulus of elasticity is 3.01KPa。
Embodiment 7
Processed foamed material is 25 layers of poroelasticity foam, a height of 1.9mm of average layer.
In technological parameter, silica gel viscosity R is 62.5Pas, silica gel ejection flow velocity Q is 1.19ml/min, jet diameters D is 1.1mm, sprinkler height H are 27mm, shower nozzle translational speed（Print speed）U0For 10mm/s.
Every layer of pattern is kicked that type pattern is evenly distributed to be formed by the side of strip, and the arrangement of adjacent two layers pattern is cross-shaped State.The amplitude W of convoluted pattern is 11mm, Cycle Length P is 44mm, loop bandwidth T is 6.
Referring to Fig. 5, the length a per layer material is 70mm, width b is that spacing d between 70mm, adjacent two rows pattern is 10mm。
It is shown in Figure 6, according to processing route, from the off, produce winding line 1 in the X direction using winding pattern, For winding line at the end of the 1st row, workbench moves d=10mm in the Y direction（The distance between two adjacent lines）, and start to beat Printed volume coiling 2, winding line printing are repeated until terminating point, and after first layer machines, workbench moves a spacing along Z-direction From（The height of winding layer）, and ensure nozzle to manufactured silica gel layer height be 27mm, and start in X direction（Vertically Direction in layer 1）Layer 2 is printed line by line, in layer 3, line direction is changed into identical with layer 1, by that analogy, beats altogether 25 layers of print.
The density of resulting poroelasticity foam is 0.215 g/cm3, by compression verification, obtaining its modulus of elasticity is 3.76KPa。

Claims (8)

1. a kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing, using fluid 3D printer, realizes eight The making of elastic foam material more than layer, it is characterised in that：
In described more than eight layers of elastic foam material per layer material by different strips pattern it is evenly distributed form, the pattern It is divided into five kinds：Type is kicked in linear pattern, sinusoidal waveform, 8 fonts, convoluted, side；Per layer material length be a, width b, adjacent two The spacing arranged between pattern is d；
The technological parameter for realizing the operation of five kinds of patterns is silica gel viscosity R, silica gel sprays flow velocity Q, jet diameters D, sprinkler height H and Shower nozzle translational speed U0；In the technological parameter, silica gel viscosity R, silica gel spray flow velocity Q and jet diameters D joins for common process Number, sprinkler height H is 6-51mm, shower nozzle translational speed U0For 2-14mm/s；Pattern parameter be figure amplitude W be 0-14mm, The Cycle Length P of figure is 0-45mm, the loop bandwidth T of figure is 0-7mm；
The poroelasticity foam of manufactured goods, porosity 30-50%, modulus of elasticity are more than 5.0KPa.
2. a kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing according to claim 1, it is special Sign is：Spacing d between the adjacent two rows pattern is 3-5mm.
3. a kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing according to claim 1, it is special Sign is：The cross-shaped state of arrangement of adjacent two layers pattern.
4. a kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing according to claim 1, it is special Sign is：When making linear material layer, the sprinkler height H in technological parameter is 6-51mm, shower nozzle translational speed U0For 12- 14mm/s, amplitude W is 0-0.2mm in pattern parameter, Cycle Length P is 0, loop bandwidth T is 0.
5. a kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing according to claim 1, it is special Sign is：When making the material layer of sinusoidal waveform, the sprinkler height H in technological parameter is 6-24mm, shower nozzle translational speed U0For 7-12mm/s, amplitude W is 10-11mm in pattern parameter, Cycle Length P is 22-24mm, loop bandwidth T is 0.
6. a kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing according to claim 1, it is special Sign is：When making the material layer of 8 fonts, sprinkler height H is 6-51mm, shower nozzle translational speed U in technological parameter0For 3-9mm/ S, amplitude W is 14mm in pattern parameter, Cycle Length P is 43-45mm, loop bandwidth T is 4-6mm.
7. a kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing according to claim 1, it is special Sign is：When making convoluted material layer, sprinkler height H is 6-51mm, shower nozzle translational speed U in technological parameter0For 2- 3mm/s, amplitude W is 2-5mm in pattern parameter, Cycle Length P is 1-4mm, loop bandwidth T is 2-4mm.
8. a kind of poroelasticity foam preparation method based on moisturecuring silica gel 3D printing according to claim 1, it is special Sign is：When the material layer of type is kicked in making side, sprinkler height H is 24-51mm, shower nozzle translational speed U in technological parameter0For 7- 13mm/s, amplitude W is 9-11mm in pattern parameter, Cycle Length P is 42-44mm, loop bandwidth T is 5-7mm.
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CN111347666A (en) * 2020-03-19 2020-06-30 合肥工业大学 3D printing delay compensation method and system based on viscous liquid extrusion
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